Question: Consider the shear strength experiment described in Example 1 0 - 1 1 . ( a ) Construct a 9 5 % coni dence interval

Consider the shear strength experiment described in Example 10-11.(a) Construct a 95% coni dence interval on the difference in mean shear strength for the two methods. Is the result you obtained consistent with the i ndings in Example 10-11? Explain why. (b) Do each of the individual shear strengths have to be nor mally distributed for the paired t-test to be appropriate,

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